﻿//==============================================================================
// File: Extensions.cs
// Created: 2010-05-10
// Author: Piotr Włodek
//==============================================================================
// This file is a part of MAMMOTH project.
// Copyright (C) 2010 AGH University of Science and Technology, Krakow.
// https://caribou.iisg.agh.edu.pl/trac/mammoth
//
// Mammoth is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// Mammoth is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with WpfRcp. If not, see http://www.gnu.org/licenses/.
//==============================================================================

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;

namespace WpfRcp.PropertyModel.Collections
{
    /// <summary>
    /// Contains handy extension methods.
    /// </summary>
    public static class Extensions
    {
        public static int Count(this IEnumerable enumerable)
        {
            var collection = enumerable as ICollection;
            if (collection != null)
            {
                return collection.Count;
            }

            return Enumerable.Count(enumerable.Cast<object>());
        }

        public static void Apply<T>(this IEnumerable<T> enumerable, Action<T> action)
        {
            foreach (var element in enumerable)
            {
                action(element);
            }
        }

        public static IEnumerable<TResult> Apply<T, TResult>(this IEnumerable<T> enumerable, Func<T, TResult> action)
        {
            foreach (var element in enumerable)
            {
                yield return action(element);
            }
        }
    }
}